At a school, there were 60 students from Club R and 40% less students from Club S. Some students joined Club S and the ratio of the number of students from Club R to the number of students from Club S became 6 : 5. How many students joined Club S?
|
Club R |
Club S |
Before |
60 |
36 |
Change |
|
+ ? |
After |
6 u |
5 u |
Number of students from Club S at first in percent
= 100% - 40%
= 60%
Number of students from Club S at first
= 60% x 60
=
60100 x 60
= 36
Number of students in Club R remains unchanged.
6 u = 60
1 u = 60 ÷ 6 = 10
Number of students from Club S in the end
= 5 u
= 5 x 10
= 50
Number of students joined Club S
= 50 - 36
= 14
Answer(s): 14